Whenever one of your other creatures is destroyed, or 1 of the cards under your evolution creatures is put in the graveyard, look at the top card of your deck. If that card is a spell, you may show it to your opponent and put it into your hand.

At last, the moble fortress "Pillar of Feather" began its advance. The White Knights were itching for a final battle with their ancient enemy who were also advancing.